Ya'll are talking about colder nose dogs finding hogs but it depends on what time you get out there. Most hogs start heading for their bedding areas around daylight. Most hog hunters I know start about daylight or shortly after. Should be a fairly fresh track that any cur dog could trail out.
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Now if you run into fresh sign late in the morning or early afternoon, then you are going to have to have a colder nosed dog.
One other thing. Bedding areas will be fairly close to where the hogs are feeding at. Certain areas it will be the thickest part of the area. I have seen hogs bed in fairly open areas because that was close to where they were feeding at. With a hog, there are two main concerns. Where the feed is at and how much pressure they are getting. If they are dogged a lot, they will move, no matter how good the food.